// Program to demonstrate Distance class.
// Assignment-17
// distfi.cpp, Author - Krishna Kumar Khatri.

// Uncomment ONLY the following line if you are using Turbo/Borland compiler.
// #define TC
#ifdef TC
	#include <iostream.h>
#else
	#include <iostream>
	using namespace std;
#endif
#include <conio.h>  // For getch.

class Distance
{
        int feet;
        int inch;
    public:
        Distance(const int& f = 0, const int& i = 0) : 
                 feet(f), inch(i)
            { }
        Distance add(const Distance&, const Distance&);
        void display();

};

Distance Distance::add(const Distance& dst1, const Distance& dst2)
{
	Distance dist;

	dist.feet = dst1.feet + dst2.feet;
	if (dst1.inch + dst2.inch > 12) {
		dist.feet++;
		dist.inch = dst1.inch + dst2.inch - 12;
	} else
		dist.inch = dst1.inch + dst2.inch;

	return dist;
}

void Distance::display()
	{ cout << feet << "\" " << inch << "'"; }

int main()
{
    #ifdef TC
        clrscr();
    #endif
    Distance d1(5, 12);
    Distance d2(6, 2);
    Distance d3, dummy;
    
    cout << "First distance - ";
    d1.display();
    cout << endl << "Second distance - ";
    d2.display();
    
    d3 = dummy.add(d1, d2) ;
    cout << endl << "Summed up - ";
    d3.display();

    cout << endl << endl << "Program over. Press any key to exit...";
    getch();
    return 0; // Successful termination.
}